Home / 631,638,001.30-947,457,001.95-478,582,993.30

Finding the Fourth Proportional to 631,638,001.30, 947,457,001.95 and 478,582,993.30

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Solution

The fourth proportional to 631,638,001.30, 947,457,001.95 and 478,582,993.30 is: 717,874,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,638,001.30 : 947,457,001.95 = 478,582,993.30 : x
  2. Step 2: Convert to fraction form
    631,638,001.30/947,457,001.95 = 478,582,993.30/x
  3. Step 3: Cross multiply
    631,638,001.30x = 947,457,001.95 × 478,582,993.30
  4. Step 4: Simplify right side
    631,638,001.30x = 453,436,808,016,274,944
  5. Step 5: Solve for x
    x = 453,436,808,016,274,944/631,638,001.30
  6. Step 6: Final answer
    x = 717,874,489.95

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Double scale
Find fourth proportional to 631,638,002.30, 947,457,003.45 and 478,582,994.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.